Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Arbuscular mycorrhizal fungi are a double-edged sword in plant invasion controlled by phosphorus concentration.

Abstract

This paper presents the results of studies conducted to understand how phosphorus (P) concentration regulates the associations of arbuscular mycorrhizal (AM) fungi with native and invasive plants (Eupatorium catarium vs. E. chinense and Bidens pilosa vs. Sesbania cannabina) and its influence on their competition. It was shown that AM facilitation of plant invasion was nutrient dependent. The competitive advantage of the invasive over native plants was enhanced by AM fungi in low P conditions, but was weakened in high P conditions. These highlight the necessity to incorporate the interaction between soil microbes and nutrient availability in future studies on plant invasion.